The 'doodle' (adaptation of Google's logo), showing a classic saucer-shaped spacecraft shining a light down on the search-engine's regular logo, has been the subject of much speculation.The world's internet voices want to now whether the all-powerful web giant is trying to tell us something.Google regularly changes its logo to mark important event such as the recent 40th anniversary of the moon landings.But nobody can work out why Google has chosen this date to put a UFO logo on the world's most visited web page."Does anybody know what's going on?" asks one."Aliens landed on Earth this day last year," offers another blogger by way of explanation.Some think Google's global dominance may extend beyond this planet."If Google says the aliens are coming, I'm getting out of here," says one US blogger.One of the things bothering the online community is that early on Saturday morning the new logo could be seen in some places, but not others.[This may be key in understanding this whole (for lack of a better word) 'test'.]"Am I the one that is going crazy?" asks a blogger in Arizona who can't see the logo.If you click on the alien logo you are given the results for "unexplained phenomena".In Google's top ten most searched terms "unexplained phenomena" merits two entries.It is unclear whether Google is responding to popular demand or dictating what the public should be interested in.

The UFO, which appeared to be abducting the second O in the word Google, referred the user to the search term "unexplained phenomenon" when clicked. The term was, throughout Saturday, one of the most searched-for phrases on the search engine.Google tends to use its so-called doodles - the adaptations of its logo - to mark major calendar events or the birthdays of large organisations. But Saturday's doodle appeared to have no commemorative tie-in and the web was alive with speculation as to its purpose.During the morning, a numeric code (above) - 1.12.12 25.15.21.18 15 1.18.5 2.5.12.15.14.7 20.15 21.19 - appeared on Google's Twitter stream. The code, which translated to the phrase "all your O are belong to us", was an echo of a famous internet meme from 2000.

But late on Saturday Google released the following statement:

"We consider the second ‘o’ critical to user recognition of our brand and pronunciation of our name. We are actively looking into the mysterious tweet that has appeared on the Google twitter stream and the disappearance of the “o” on the Google homepage. We hope to have an update in the coming weeks.”·